Method for compression of aqueous slurry containing solid foreign matter and paper dust, and treatment method of waste gypsum board
US-12559380-B2 · Feb 24, 2026 · US
using screw filters
using screw filters · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F11/125 |
| Official title | using screw filters |
| Display label | using screw filters |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dewatering machine capable of controlling moisture content
US-12358824-B2 · Jul 15, 2025 · US
Device and process for converting organic waste to biogas
US-12098351-B2 · Sep 24, 2024 · US
Sludge treatment apparatus and excreta treatment apparatus including same
US-2024262733-A1 · Aug 8, 2024 · US
Device for sludge treatment
US-11981589-B2 · May 14, 2024 · US
Toxic Waste Treatment Process And Treatment Apparatus
US-2024116791-A1 · Apr 11, 2024 · US
Cationic emulsion terpolymer to increase cake solids in centrifuges
US-2023357067-A1 · Nov 9, 2023 · US
Anaerobic digestion of organic fraction of solid waste with high quality digestate
US-11787720-B2 · Oct 17, 2023 · US
Method for compression of aqueous slurry containing solid foreign matter and paper dust, and treatment method of waste gypsum board
US-2023257277-A1 · Aug 17, 2023 · US
Solid feces treatment apparatus and individual feces treatment system including same
US-2023194081-A1 · Jun 22, 2023 · US
Organics recovery from dry fraction
US-11613484-B2 · Mar 28, 2023 · US
Dewatering machine capable of controlling moisture content
US-2023077658-A1 · Mar 16, 2023 · US
Systems and methods for dewatering, extruding, and combusting blackwater
US-11584660-B2 · Feb 21, 2023 · US
Crushing device and waste treatment device
US-2023038184-A1 · Feb 9, 2023 · US
System and Method for Treating Wastewater That Includes Biosorption and Filtration
US-2022194831-A1 · Jun 23, 2022 · US
Method for removing liquid from a slurry
US-11179909-B2 · Nov 23, 2021 · US
Device and process for converting organic waste to biogas
US-2021332313-A1 · Oct 28, 2021 · US
Systems and Methods for Dewatering, Extruding, and Combusting Blackwater
US-2021300783-A1 · Sep 30, 2021 · US
Device for sludge treatment
US-2021188682-A1 · Jun 24, 2021 · US
Two stage anaerobic digestion with intermediate hydrolysis
US-11021381-B2 · Jun 1, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F11/125?
- CPC C02F11/125 is the Cooperative Patent Classification code for “using screw filters.”
- How many patents are filed under CPC C02F11/125 (using screw filters)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC C02F11/125 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).